Helicon wave damping coefficient of Chinese fusion engineering testing reactor plasma
نویسندگان
چکیده
منابع مشابه
Helicon Wave Coupling
It is well known that the simple theory of helicon waves, in which the electron mass m e is neglected, is valid only if E z also vanishes, a condition which is not satisfied in experiment. Exact solutions of cold plasma theory with finite m e and E z predict the existence of additional highly damped Trivelpiece-Gould (TG) modes, which can greatly modify the nature of helicon discharges. However...
متن کاملDevelopment of Terahertz Pulse Wave Diagnostics for a Magnetized Fusion Plasma Reactor∗)
Terahertz wave diagnostics have been developed for current and future high-temperature and high-density fusion plasma measurements. Since the combined system of a reflectometer and a delayometer requires a wideband frequency source for the density profile measurements, a terahertz pulse is a possible candidate. A test system using terahertz time-domain spectroscopy has been constructed to devel...
متن کاملH- to W-mode transitions and properties of a multimode helicon plasma reactor
Magnetically enhanced inductively coupled plasmas (MEICPs) typically display mode jumps as power or the magnetic field is increased. Inductive (H-mode) to helicon (W-mode) transitions in research reactors having uniform axial magnetic fields are often accompanied by a change in the spatial model structure and rapid increase in plasma density. In industrial plasma sources, the magnetic field str...
متن کاملUpper Limit to Landau Damping in Helicon Discharges
The uncommonly high rf absorption efficiency of helicon discharges has been thought to be caused by Landau damping of helicon waves and the concomitant acceleration of primary electrons. By constructing an energy analyzer that accounts for rf fluctuations in plasma potential, it is shown that Landau-accelerated electrons are too sparse to explain the ionization efficiency. Instead, rf absorptio...
متن کاملThrust Measurements of a Helicon Plasma Source
There is interest in using a helicon plasma source in propulsive applications as both an ion source and as a thruster. Developing a helicon thruster requires a performance baseline as a basis for future optimization and expansion. The thrust of a helicon is measured using an null-type inverted pendulum thrust stand at a pressure of 2x10 -5 Torr through the operating range of 215-840 W RF power,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Physica Sinica
سال: 2020
ISSN: 1000-3290
DOI: 10.7498/aps.69.20200222